Weblogic 12.2.1.2 wrong Dockerfiles

[nicolimo86]

docker-images/OracleWebLogic/dockerfiles/12.2.1.2/Dockerfile.developer :

• FROM oracle/jdk:8 should be replaced with FROM oracle/serverjre:8
• there is a reference to a removed file: container-scripts/create-wls-domain.py

Same thing applies to docker-images/OracleWebLogic/dockerfiles/12.2.1.2/Dockerfile.generic